The purification process of PSA biogas mainly includes three main processes: sulfur removal, drying and separation after biogas collection. The biogas after separation and purification are stored under pressure for subsequent use.
Problems in the process of pressure swing adsorption of biogas:
(1) High process cost.
The selection of adsorbent is the core part of the whole process of PSA. The selection of high-quality and reliable adsorbent can not only obtain high purity gas meeting the requirements, but also improve the operation reliability of the whole equipment. However, the domestic technology of manufacturing high-quality and reliable adsorbent is still relatively lacking, while the cost of imported adsorbent is relatively high.
(2) Low degree of automation.
Because the adsorption tower is a closed pressure vessel, the whole adsorption and separation process is basically completed in the tower. The change of air flow in the tower is difficult to grasp, and the changes of pressure and temperature of the gas in the tower are also complex, which makes the collection and control of the relevant indicators of the whole pressure swing adsorption process difficult and difficult to realize accurate automatic control, At present, the automation of the process of pressure swing adsorption of biogas is low.
(3) Single structure of adsorption tower
The purification effect of PSA is directly related to the distribution of air flow in the separation process, while the distribution of air flow has a great relationship with the internal structure of the adsorption tower. At present, the adsorption tower structure adopted by most of the PSA processes is still relatively traditional, the tower structure is single, there is a great dead angle between the tower plates, which reduces the contact area between the air flow and the adsorbent, The results show that the utilization effect of adsorbent is not high.
DEAR is committed to scientific and technological innovation, always taking technology as the lead, quality as the basis, striving to create greater value for our customers and promote the healthy development of the industry. The company has three research centers, which invest a lot of R & D funds every year. The sustained and high-intensity R & D investment has become one of the sources of rapid and steady growth of the performance of DEAR.
Three hard core strength of DEAR air separation biogas purification equipment:
The company has a number of patent technologies, of which two ultra-low pressure energy saving patents are the leading domestic level, which can reduce the energy consumption of biogas purification equipment by 5% - 15%, and save operation costs.
The remote intelligent monitoring system independently developed by DEAR enables the whole process intelligent management of equipment field and remote monitoring terminal, early detection and early warning of faults, and saves the labor cost of field operators.
DEAR has invested a lot to build an intelligent production workshop to ensure that the product quality is close to zero defects, improve the accuracy of biogas purification equipment and shorten the scheduled cycle.
As a leader of private sector in air separation, the "DEAR air separation" advocates open up, cooperation and win-win cooperation, innovates and expands industrial value with customers and partners, forms healthy and benign industrial ecosystem, and actively assumes social responsibilities. DEAR supports and participates in the formulation of industry standards, promotes the healthy development of industries, and follows closely the Internet plus, deep integration and effective penetration. Promote the development of industrial intelligence.
